package lab4;

import java.util.Scanner;
import java.util.Arrays;
class PersonSortable implements Comparable<PersonSortable>{
	private String name;
	private int age;
	public PersonSortable(String name,int age){
		this.name=name;
		this.age=age;
	}
	@Override
	public String toString() {
		return name + "-" + age;
	}
	@Override
	public int compareTo(PersonSortable o){
		int x=this.name.compareTo(o.name);
		if(x!=0)
			return x;
		else
			return this.age-o.age;
	}
	
}
public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc=new Scanner(System.in);
		int n=sc.nextInt();
		PersonSortable[] persons=new PersonSortable[n];
		for(int i=0;i<n;i++){
			persons[i]=new PersonSortable(sc.next(),sc.nextInt());
		}
		Arrays.sort(persons);
		for(int i=0;i<n;i++){
			System.out.println(persons[i]);
		}
		System.out.println(Arrays.toString(PersonSortable.class.getInterfaces()));
	}

}
